Certain aspects of the present disclosure propose techniques for transmitting uplink transmissions in special subframes for LTE TDD systems. Certain aspects provide a method that generally includes determining a region of uplink transmissions in uplink pilot timeslot (UpPTS), wherein the UpPTS comprises three or more symbols allocated for uplink transmissions, and transmitting in the UpPTS.
Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method for wireless communications by a user equipment (UE), comprising: determining, by the UE, a region of uplink transmissions in an uplink pilot timeslot (UpPTS) associated with a first radio access technology (RAT) network, wherein the UpPTS comprises three or more symbols allocated for uplink transmissions; aligning uplink transmissions between the first RAT network and a second RAT network so that the first RAT network coexists with the second RAT network, wherein a number of the three or more UpPTS symbols is based on a configuration of the second RAT, wherein a portion of the symbols for uplink transmissions overlaps with at least a guard period (GP) and an UpPTS associated with the second RAT network, and wherein a number of symbols allocated for a GP and the UpPTS associated with the first RAT network is determined by: determining a total time duration of the GP associated with the second RAT network, the UpPTS associated with the second RAT network, and uplink timeslots associated with the second RAT network; and determining a difference between the total time duration and a time duration of uplink subframes associated with the first RAT network; and transmitting in the UpPTS.
A mobile phone (UE) transmits data on the uplink in an LTE TDD network, configuring the Uplink Pilot Time Slot (UpPTS) which has 3 or more OFDM symbols allocated for the uplink. To allow LTE TDD to work alongside another network (TD-SCDMA), the number of UpPTS symbols is configured based on the TD-SCDMA settings. The LTE uplink transmissions partially overlap the guard period (GP) and UpPTS of the TD-SCDMA network. The UE calculates the number of symbols allocated for the GP and UpPTS by determining the total duration of the TD-SCDMA's GP, UpPTS, and uplink timeslots, and then calculates the difference between this total time and the duration of LTE's uplink subframes.
2. The method of claim 1 , wherein the uplink transmissions comprise at least sounding reference signal (SRS) transmissions, random access channel (RACH) transmissions, physical uplink shared channel (PUSCH) transmissions, or transmissions involving peer-to-peer (P2P) communication.
The method for wireless communication in the previous description, where the UE transmits data on the uplink, uses the UpPTS to transmit one or more of the following types of uplink transmissions: sounding reference signals (SRS) for channel estimation, random access channel (RACH) transmissions to initiate a connection, physical uplink shared channel (PUSCH) transmissions for sending user data, and peer-to-peer (P2P) communication transmissions.
3. The method of claim 2 , wherein the SRS transmissions overlap with the RACH transmissions in a last two symbols of the three or more symbols allocated for uplink transmissions.
In the method for wireless communication described earlier, if the UE transmits sounding reference signals (SRS) and random access channel (RACH) transmissions in the UpPTS, then the SRS transmissions overlap the RACH transmissions in the last two OFDM symbols of the three or more symbols allocated for uplink transmissions in the UpPTS.
4. The method of claim 1 , wherein at least one symbol of the number of symbols allocated for the GP and the UpPTS associated with the first RAT network is allocated for the GP.
In the method for wireless communication described earlier, where the UE calculates the number of symbols allocated for the GP and UpPTS, at least one of the OFDM symbols allocated for the guard period (GP) and the UpPTS associated with the LTE TDD network is specifically allocated to the guard period (GP). This ensures sufficient time for switching between uplink and downlink.
5. The method of claim 1 , wherein the second RAT network comprises time division synchronous code division multiple access (TD-SCDMA).
In the method for wireless communication described earlier, the second radio access technology (RAT) network that the LTE TDD network coexists with is time division synchronous code division multiple access (TD-SCDMA). The LTE TDD network adjusts its configuration to allow coexistence with TD-SCDMA.
6. The method of claim 4 , wherein the first RAT network comprises Long Term Evolution (LTE) time division duplex (TDD).
In the method for wireless communication described earlier, the first radio access technology (RAT) network is Long Term Evolution (LTE) time division duplex (TDD). The LTE TDD network is being configured to coexist with another RAT network (TD-SCDMA).
7. The method of claim 6 , wherein for a TD-SCDMA downlink/uplink configuration of 2:4, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein k=1, and 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the method for wireless communication described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 2:4, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where k=1, and 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
8. The method of claim 6 , wherein for a TD-SCDMA downlink/uplink configuration of 3:3, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein 1≦k≦10, and 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the method for wireless communication described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 3:3, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where 1≦k≦10, and 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
9. The method of claim 6 , wherein for a TD-SCDMA downlink/uplink configuration of 4:2, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein 1≦k≦6, 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the method for wireless communication described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 4:2, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where 1≦k≦6, 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
10. The method of claim 6 , wherein for a TD-SCDMA downlink/uplink configuration of 1:5, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein 1≦k≦5, 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the method for wireless communication described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 1:5, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where 1≦k≦5, 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
11. An apparatus for wireless communications, comprising: means for determining a region of uplink transmissions in an uplink pilot timeslot (UpPTS) associated with a first radio access technology (RAT) network, wherein the UpPTS comprises three or more symbols allocated for uplink transmissions; means for aligning uplink transmissions between the first RAT network and a second RAT network so that the first RAT network coexists with the second RAT network, wherein a number of the three or more UpPTS symbols is based on a configuration of the second RAT, wherein a portion of the symbols for uplink transmissions overlaps with at least a guard period (GP) and an UpPTS associated with the second RAT network, and wherein a number of symbols allocated for a GP and the UpPTS associated with the first RAT network is determined by: determining a total time duration of the GP associated with the second RAT network, the UpPTS associated with the second RAT network, and uplink timeslots associated with the second RAT network; and determining a difference between the total time duration and a time duration of uplink subframes associated with the first RAT network; and means for transmitting in the UpPTS.
A wireless device includes a component that determines a region of uplink transmissions in an LTE TDD Uplink Pilot Time Slot (UpPTS), where the UpPTS comprises 3 or more symbols allocated for uplink transmissions. Another component aligns uplink transmissions between the LTE TDD network and a second network (TD-SCDMA) so the networks can coexist. The number of UpPTS symbols depends on the second network's settings. The LTE uplink transmissions partially overlap with the second network's guard period (GP) and UpPTS. The component calculates the number of symbols allocated for the GP and UpPTS by determining the total time duration of the second network's GP, UpPTS, and uplink timeslots, then finds the difference between this total and the duration of the LTE's uplink subframes. A third component transmits in the UpPTS.
12. The apparatus of claim 11 , wherein the uplink transmissions comprise at least sounding reference signal (SRS) transmissions, random access channel (RACH) transmissions, physical uplink shared channel (PUSCH) transmissions, or transmissions involving peer-to-peer (P2P) communication.
The wireless device in the previous description transmits data on the uplink using the UpPTS for one or more of the following types of uplink transmissions: sounding reference signals (SRS) for channel estimation, random access channel (RACH) transmissions to initiate a connection, physical uplink shared channel (PUSCH) transmissions for sending user data, and peer-to-peer (P2P) communication transmissions.
13. The apparatus of claim 12 , wherein the SRS transmissions overlap with the RACH transmissions in a last two symbols of the three or more symbols allocated for uplink transmissions.
In the wireless device described earlier, which transmits sounding reference signals (SRS) and random access channel (RACH) transmissions in the UpPTS, the SRS transmissions overlap the RACH transmissions in the last two OFDM symbols of the three or more symbols allocated for uplink transmissions in the UpPTS.
14. The apparatus of claim 11 , wherein at least one symbol of the number of symbols allocated for the GP and the UpPTS associated with the first RAT network is allocated for the GP.
In the wireless device described earlier, which calculates the number of symbols allocated for the GP and UpPTS, at least one of the OFDM symbols allocated for the guard period (GP) and the UpPTS associated with the LTE TDD network is specifically allocated to the guard period (GP). This ensures sufficient time for switching between uplink and downlink.
15. The apparatus of claim 11 , wherein the second RAT network comprises time division synchronous code division multiple access (TD-SCDMA).
In the wireless device described earlier, the second radio access technology (RAT) network that the LTE TDD network coexists with is time division synchronous code division multiple access (TD-SCDMA). The LTE TDD network adjusts its configuration to allow coexistence with TD-SCDMA.
16. The apparatus of claim 15 , wherein the first RAT network comprises Long Term Evolution (LTE) time division duplex (TDD).
In the wireless device described earlier, the first radio access technology (RAT) network is Long Term Evolution (LTE) time division duplex (TDD). The LTE TDD network is being configured to coexist with another RAT network (TD-SCDMA).
17. The apparatus of claim 16 , wherein for a TD-SCDMA downlink/uplink configuration of 2:4, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein k=1, and 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the wireless device described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 2:4, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where k=1, and 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
18. The apparatus of claim 16 , wherein for a TD-SCDMA downlink/uplink configuration of 3:3, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein 1≦k≦10, and 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the wireless device described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 3:3, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where 1≦k≦10, and 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
19. The apparatus of claim 16 , wherein for a TD-SCDMA downlink/uplink configuration of 4:2, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein 1≦k≦6, 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the wireless device described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 4:2, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where 1≦k≦6, 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
20. The apparatus of claim 16 , wherein for a TD-SCDMA downlink/uplink configuration of 1:5, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein 1≦k≦5, 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the wireless device described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 1:5, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where 1≦k≦5, 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
21. An apparatus for wireless communications, comprising: at least one processor configured to: determine a region of uplink transmissions in an uplink pilot timeslot (UpPTS) associated with a first radio access technology (RAT) network, wherein the UpPTS comprises three or more symbols allocated for uplink transmissions; align uplink transmissions between the first RAT network and a second RAT network so that the first RAT network coexists with the second RAT network, wherein a number of the three or more UpPTS symbols is based on a configuration of the second RAT, wherein a portion of the symbols for uplink transmissions overlaps with at least a guard period (GP) and an UpPTS associated with the second RAT network, and wherein the at least one processor is configured to determine a number of symbols allocated for a GP and the UpPTS associated with the first RAT network by: determining a total time duration of the GP associated with the second RAT network, the UpPTS associated with the second RAT network, and uplink timeslots associated with the second RAT network; and determining a difference between the total time duration and a time duration of uplink subframes associated with the first RAT network; and transmit in the UpPTS; and a memory coupled to the at least one processor.
A wireless device includes a processor and memory. The processor determines a region of uplink transmissions in an LTE TDD Uplink Pilot Time Slot (UpPTS), where the UpPTS comprises 3 or more symbols allocated for uplink transmissions. The processor aligns uplink transmissions between the LTE TDD network and a second network (TD-SCDMA) so the networks can coexist. The number of UpPTS symbols depends on the second network's settings, and the LTE uplink transmissions partially overlap the second network's guard period (GP) and UpPTS. The processor calculates the number of symbols allocated for the GP and UpPTS by determining the total time duration of the second network's GP, UpPTS, and uplink timeslots, and then calculates the difference between this total time and the duration of the LTE's uplink subframes. Finally, the processor controls the device to transmit in the UpPTS.
22. The apparatus of claim 21 , wherein the uplink transmissions comprise at least sounding reference signal (SRS) transmissions, random access channel (RACH) transmissions, physical uplink shared channel (PUSCH) transmissions, or transmissions involving peer-to-peer (P2P) communication.
The wireless device in the previous description, where the processor transmits data on the uplink, uses the UpPTS to transmit one or more of the following types of uplink transmissions: sounding reference signals (SRS) for channel estimation, random access channel (RACH) transmissions to initiate a connection, physical uplink shared channel (PUSCH) transmissions for sending user data, and peer-to-peer (P2P) communication transmissions.
23. The apparatus of claim 22 , wherein the at least one processor is configured to transmit the SRS transmissions overlapping with the RACH transmissions in a last two symbols of the three or more symbols allocated for uplink transmissions.
In the wireless device described earlier, the processor is configured to transmit the sounding reference signals (SRS) overlapping with the random access channel (RACH) transmissions in the last two OFDM symbols of the three or more symbols allocated for uplink transmissions in the UpPTS.
24. The apparatus of claim 21 , wherein at least one symbol of the number of symbols allocated for the GP and the UpPTS associated with the first RAT network is allocated for the GP.
In the wireless device described earlier, where the processor calculates the number of symbols allocated for the GP and UpPTS, at least one of the OFDM symbols allocated for the guard period (GP) and the UpPTS associated with the LTE TDD network is specifically allocated to the guard period (GP). This ensures sufficient time for switching between uplink and downlink.
25. The apparatus of claim 21 , wherein the second RAT network comprises time division synchronous code division multiple access (TD-SCDMA).
In the wireless device described earlier, the second radio access technology (RAT) network that the LTE TDD network coexists with is time division synchronous code division multiple access (TD-SCDMA). The LTE TDD network adjusts its configuration to allow coexistence with TD-SCDMA.
26. The apparatus of claim 25 , wherein the first RAT network comprises Long Term Evolution (LTE) time division duplex (TDD).
In the wireless device described earlier, the first radio access technology (RAT) network is Long Term Evolution (LTE) time division duplex (TDD). The LTE TDD network is being configured to coexist with another RAT network (TD-SCDMA).
27. The apparatus of claim 26 , wherein for a TD-SCDMA downlink/uplink configuration of 2:4, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein k=1, and 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the wireless device described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 2:4, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where k=1, and 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
28. The apparatus of claim 26 , wherein for a TD-SCDMA downlink/uplink configuration of 3:3, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein 1≦k≦10, and 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the wireless device described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 3:3, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where 1≦k≦10, and 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
29. The apparatus of claim 26 , wherein for a TD-SCDMA downlink/uplink configuration of 4:2, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein 1≦k≦6, 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the wireless device described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 4:2, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where 1≦k≦6, 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
30. The apparatus of claim 26 , wherein for a TD-SCDMA downlink/uplink configuration of 1:5, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein 1≦k≦5, 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the wireless device described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 1:5, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where 1≦k≦5, 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
31. A non-transitory computer-readable medium having computer executable code stored thereon, comprising: code for determining a region of uplink transmissions in an uplink pilot timeslot (UpPTS) associated with a first radio access technology (RAT) network, wherein the UpPTS comprises three or more symbols allocated for uplink transmissions; code for aligning uplink transmissions between the first RAT network and a second RAT network so that the first RAT network coexists with the second RAT network, wherein a number of the three or more UpPTS symbols is based on a configuration of the second RAT, wherein a portion of the symbols for uplink transmissions overlaps with at least a guard period (GP) and an UpPTS associated with the second RAT network, and wherein a number of symbols allocated for a GP and the UpPTS associated with the first RAT network is determined by: determining a total time duration of the GP associated with the second RAT network, the UpPTS associated with the second RAT network, and uplink timeslots associated with the second RAT network; and determining a difference between the total time duration and a time duration of uplink subframes associated with the first RAT network; and code for transmitting in the UpPTS.
A computer program stored on a non-transitory medium contains code that, when executed, performs the following steps: It determines a region of uplink transmissions in an LTE TDD Uplink Pilot Time Slot (UpPTS), where the UpPTS comprises 3 or more symbols allocated for uplink transmissions. It aligns uplink transmissions between the LTE TDD network and a second network (TD-SCDMA) so the networks can coexist. The number of UpPTS symbols depends on the second network's settings, and the LTE uplink transmissions partially overlap with the second network's guard period (GP) and UpPTS. The code calculates the number of symbols allocated for the GP and UpPTS by determining the total time duration of the second network's GP, UpPTS, and uplink timeslots, and then calculates the difference between this total time and the duration of the LTE's uplink subframes. Finally, it transmits in the UpPTS.
32. The non-transitory computer-readable medium of claim 31 , wherein the uplink transmissions comprise at least sounding reference signal (SRS) transmissions, random access channel (RACH) transmissions, physical uplink shared channel (PUSCH) transmissions, or transmissions involving peer-to-peer (P2P) communication.
The computer program in the previous description, which transmits data on the uplink, uses the UpPTS to transmit one or more of the following types of uplink transmissions: sounding reference signals (SRS) for channel estimation, random access channel (RACH) transmissions to initiate a connection, physical uplink shared channel (PUSCH) transmissions for sending user data, and peer-to-peer (P2P) communication transmissions.
33. The non-transitory computer-readable medium of claim 32 , wherein the SRS transmissions overlap with the RACH transmissions in a last two symbols of the three or more symbols allocated for uplink transmissions.
In the computer program described earlier, which transmits sounding reference signals (SRS) and random access channel (RACH) transmissions in the UpPTS, the SRS transmissions overlap the RACH transmissions in the last two OFDM symbols of the three or more symbols allocated for uplink transmissions in the UpPTS.
34. The non-transitory computer-readable medium of claim 31 , wherein at least one symbol of the number of symbols allocated for the GP and the UpPTS associated with the first RAT network is allocated for the GP.
In the computer program described earlier, which calculates the number of symbols allocated for the GP and UpPTS, at least one of the OFDM symbols allocated for the guard period (GP) and the UpPTS associated with the LTE TDD network is specifically allocated to the guard period (GP). This ensures sufficient time for switching between uplink and downlink.
35. The non-transitory computer-readable medium of claim 31 , wherein the second RAT network comprises time division synchronous code division multiple access (TD-SCDMA).
In the computer program described earlier, the second radio access technology (RAT) network that the LTE TDD network coexists with is time division synchronous code division multiple access (TD-SCDMA). The LTE TDD network adjusts its configuration to allow coexistence with TD-SCDMA.
36. The non-transitory computer-readable medium of claim 35 , wherein the first RAT network comprises Long Term Evolution (LTE) time division duplex (TDD).
In the computer program described earlier, the first radio access technology (RAT) network is Long Term Evolution (LTE) time division duplex (TDD). The LTE TDD network is being configured to coexist with another RAT network (TD-SCDMA).
37. The non-transitory computer-readable medium of claim 36 , wherein for a TD-SCDMA downlink/uplink configuration of 2:4, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein k=1, and 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the computer program described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 2:4, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where k=1, and 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
38. The non-transitory computer-readable medium of claim 36 , wherein for a TD-SCDMA downlink/uplink configuration of 3:3, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein 1≦k≦10, and 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the computer program described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 3:3, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where 1≦k≦10, and 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
39. The non-transitory computer-readable medium of claim 36 , wherein for a TD-SCDMA downlink/uplink configuration of 4:2, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein 1≦k≦6, 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the computer program described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 4:2, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where 1≦k≦6, 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
40. The non-transitory computer-readable medium of claim 36 , wherein for a TD-SCDMA downlink/uplink configuration of 1:5, LTE TDD special subframe (SSF) configurations comprise k:(14−k−n):n, wherein 1≦k≦5, 1≦n≦13−k, and wherein k indicates a number orthogonal frequency division multiplexing (OFDM) symbols of a downlink pilot timeslot (DwPTS) and n indicates a number OFDM symbols of a UpPTS.
In the computer program described earlier, where LTE TDD coexists with TD-SCDMA, and the TD-SCDMA network has a downlink/uplink configuration of 1:5, the LTE TDD special subframe (SSF) configurations are defined by k:(14−k−n):n, where 1≦k≦5, 1≦n≦13−k. 'k' represents the number of OFDM symbols in the downlink pilot timeslot (DwPTS), and 'n' represents the number of OFDM symbols in the uplink pilot timeslot (UpPTS).
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August 2, 2013
June 20, 2017
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